I could walk into a room filled with 300 men and the one I’m most attracted to, yup, would turn out to be an alcoholic or addict so you are alone when it comes to this.
I agree with SmallButMighty, it’s not really a problem when you can spot the red flags right away and know the person is not going to be a good fit for you.
You changed your life, you joined al-anon, changed job, changed friends and worked hard to have a healthier life and all that hard work is paying off.
I also think dandylion makes a great point about going fishing (dating) and being prepared to throw some back! That is what healthy dating is all about.
So when you ask, is it me or something I am doing wrong the answer is NO, it’s that you are doing all the right things which probably does not feel so right yet but know they are.